************************************************* * Modified Naiview viewer (v1.04) * * w/ OnHand Encryption/Decryption utility v1.0b * * By Jalal Muhtadi (jalal@cyberdudez.com) * * October, 2000. * * * ************************************************* This utility allows secure storing of information on the onHand or ruputer watch. This package contains two programs: * rupcrypt.exe is a Windows command-line utility for encrypting/decrypting text files based on a password. * naiview.exf v1.04 is a modified version of the best text viewer for onHand/Ruputer which now supports viewing encrypted files. rupcrypt: --------- enables you to encrypt confidential text files for storage on the onHand. Usage: rupcrypt password filename [/d] The "password" is used to generate a key for encrypting the "filename". The data in "filename" will be encrypted and stored in an output file with the extension of .enc If the /d switch is used, the "filename" is decrypted and the plaintext is stored in an output file. How to view encrypted files on onHand/Ruputer: --------------------------------------------- 1. copy naiview.exf to your onHand/Ruputer. 2. encrypt your confidential files on a PC using rupcrypt as above. 3. copy your encrypted files (*.enc) to the onHand/Ruputer. 4. open the encrypted file using naiview, you'll be asked to enter the password. 5. you can use a utility like "finied" (http://sygnas.tv/soft/finied/) to edit the filer.ini to associate .enc files with naiview.exf. Enjoy! Technical Jargon about the encryption used: ------------------------------------------ This utility uses RC5 (described in RFC2040) with key sizes of 128 bit. The password entered is used to generate a key. The password is not stored anywhere, therefore enhancing the security of the data. The performance of RC5 on the OnHand is pretty good. Notes: ----- - rupcrypt.exe limits the size of encrypted files to 32KB. (to be fixed soon!) - Entering a wrong password for an encrypted file would display garbage. - this is a beta release! e-mail me for suggestions/problems: jalal@cyberdudez.com ----- * Naiview was originally written by Yagshi, ported to OnHand by Chris Clark. Decryption capabilities added By Jalal Al-Muhtadi.